9072000

Appears in sequences

• Triangle read by rows, the Bell transform of (n+2)!/2 without column 0.at n=37A046089
• Triangle T(n,k) of associated Lah numbers, n>=2, k=1..floor(n/2).at n=22A076126
• Number of adjacent pairs of form (even,odd) among all permutations of {1,2,...,n}. Also, number of adjacent pairs of form (odd,even).at n=9A077613
• Triangle T(n,k) of numbers of connected (unicyclic) graphs with unique cycle of length k (3<=k<=n), on n labeled nodes.at n=33A098909
• Unsigned third column (k=2) of triangle A136656 divided by 4.at n=7A136659
• Number of even entries that are followed by a smaller entry in all permutations of {1,2,...,n}.at n=9A145889
• Triangular array read by rows: T(n,k) is the number of inversion pairs ( p(i) < p(j) with i>j ) that are separated by exactly k elements in all n-permutations (where the permutation is represented in one line notation); n>=2, 0<=k<=n-2.at n=40A202363
• Triangle T[r,c]=(r-1)*binomial(r-1,c-1)*(c-1)!*A093883(c), read by rows.at n=24A218566
• Triangle read by rows: number of idempotent basis elements of rank k in Brauer monoid B_n.at n=57A256041
• Expansion of e.g.f. exp(x^4/(1 - x)).at n=10A293050
• Triangle read by rows: T(n,k) is the number of chiral pairs of color loops of length n with exactly k different colors.at n=64A305541
• Number of paraphyletic coalescence sequences for 2n lineages, n each in 2 species.at n=4A306350
• Triangle read by rows. T(n, k) = binomial(n - 1, k - 1)*(n + k)! / k!.at n=31A357367
• Numbers that set records in in A379772.at n=25A379773